Considerable advance?
Experiment Could Solve Huge Challenge in Quantum Computing
ScienceAlert
Michelle Starr, August 8, 2022
Scientists at Japan's National Institutes of Natural Sciences built an ultrafast two-quantum bit (qubit) gate, which could address a massive challenge in quantum computing. By speeding up quantum gate operations beyond a millionth of a second, the gate can outpace noise and generate accurate calculations. The researchers laser-cooled two gaseous rubidium atoms to near absolute zero, and manipulated them into micron-scale distance from each other using laser-powered optical tweezers. They then used laser pulses to inflate the particles into Rydberg atoms, inducing a 6.5-nanosecond periodic exchange of orbital shape and electron energy between the atoms, which exceeded the speed of previous Rydberg atom experiments over 100-fold. ...
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